--- title: "Clean Truck Check Testers in Lodi, CA (12 listed)" description: "Find 12 CARB-credentialed Clean Truck Check testers in Lodi, San Joaquin County: 11 offer mobile testing, 2 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/san-joaquin-county/lodi/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Lodi, CA 12 testing businesses in Lodi (San Joaquin County) are on CARB's public Clean Truck Check tester list (12 credentialed testers). 11 offer mobile testing, 2 do smoke opacity tests, 7 test motorhomes. > CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester. ## Testers in Lodi - **[Capital City Diesel Inspections- TRUCK, BUS & RV](https://ctcfinder.com/tester/capital-city-diesel-inspections-truck-bus-and-rv-lodi/)** — 2600 Reynolds Ranch Pkwy, Lodi, CA 95240 — (916) 538-7777. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Classic Heavy Equipment Service](https://ctcfinder.com/tester/classic-heavy-equipment-service-lodi/)** — 885 E Lodi Ave, Lodi, CA 95240 — (209) 400-8744. Services: mobile testing, OBD testing, motorhome testing. - **[Evergreen Mobile Diesel Emissions Testing](https://ctcfinder.com/tester/evergreen-mobile-diesel-emissions-testing-lodi/)** — 747 Evergreen Dr, Lodi, CA 95242 — (209) 712-5369. Services: mobile testing, OBD testing, motorhome testing. - **[Evolution Equipment](https://ctcfinder.com/tester/evolution-equipment-lodi/)** — 17840 N Bruella Rd, Lodi, CA 95240 — (209) 810-5796. Services: mobile testing, OBD testing, motorhome testing. - **[Express Smog](https://ctcfinder.com/tester/express-smog-lodi/)** — 320 N Cherokee Ln, Lodi, CA 95240 — (925) 875-8379. Services: mobile testing, OBD testing, motorhome testing. - **[Frank C Alegre Trucking](https://ctcfinder.com/tester/frank-c-alegre-trucking-lodi/)** — 5100 W Highway 12, Lodi, CA 95242 — (209) 810-5035. Services: not listed. - **[Illest Diesel Jobs](https://ctcfinder.com/tester/illest-diesel-jobs-lodi/)** — Lodi, CA 95240 — (209) 663-8479. Services: mobile testing, OBD testing. - **[John's Mobile Repair](https://ctcfinder.com/tester/johns-mobile-repair-lodi/)** — 11056 N Golfview Rd, Lodi, CA 95240 — (209) 482-7564. Services: mobile testing, OBD testing, motorhome testing. - **[Michael Lobato](https://ctcfinder.com/tester/michael-lobato-lodi/)** — Lodi, CA 95242 — (916) 666-2650. Services: mobile testing, OBD testing. - **[Mobile Heavy Truck Smog.](https://ctcfinder.com/tester/mobile-heavy-truck-smog-lodi/)** — 714 Costa Dr, Lodi, CA 95240 — (209) 400-0545. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Phantom Truck & Trailer Repair](https://ctcfinder.com/tester/phantom-truck-and-trailer-repair-lodi/)** — 1649 E Victor Rd, Lodi, CA 95240 — (209) 425-9121. Services: mobile testing. - **[RPM clean truck smog](https://ctcfinder.com/tester/rpm-clean-truck-smog-lodi/)** — 608 S Sacramento St, Lodi, CA 95240 — (209) 625-5926. Services: mobile testing, OBD testing. ## More testers within 20 miles - **[JESUS Lopez](https://ctcfinder.com/tester/jesus-lopez-acampo/)** — Acampo, CA 95220 — (209) 400-3749 — 5 mi. Services: OBD testing, smoke opacity (non-OBD) testing. - **[Rene's Truck Testing Service](https://ctcfinder.com/tester/renes-truck-testing-service-acampo/)** — 24545 N Suttenfield Rd, Acampo, CA 95220 — (510) 882-0730 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Clean Truck Test Near Me](https://ctcfinder.com/tester/clean-truck-test-near-me-stockton/)** — 4255 E Morada Ln, Stockton, CA 95212 — (209) 687-3383 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Five Rivers Smog (Clean Truck Check)](https://ctcfinder.com/tester/five-rivers-smog-clean-truck-check-stockton/)** — 3739 Silvana Ln, Stockton, CA 95212 — (209) 407-7417 — 5 mi. Services: mobile testing, OBD testing. - **[Mad Dog](https://ctcfinder.com/tester/mad-dog-stockton/)** — Stockton, CA 95212 — (559) 806-4244 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mohammad Waseem](https://ctcfinder.com/tester/mohammad-waseem-stockton/)** — Stockton, CA 95212 — (209) 712-3087 — 5 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Prabhnoor Brar](https://ctcfinder.com/tester/prabhnoor-brar-stockton/)** — Stockton, CA 95212 — (209) 981-1946 — 5 mi. Services: OBD testing. - **[Julian Flores](https://ctcfinder.com/tester/julian-flores-stockton/)** — Stockton, CA 95210 — (209) 910-8422 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Khizar rehman](https://ctcfinder.com/tester/khizar-rehman-stockton/)** — Stockton, CA 95210 — (571) 474-8660 — 8 mi. Services: mobile testing, OBD testing, motorhome testing. - **[A+ Auto Repair](https://ctcfinder.com/tester/a-auto-repair-stockton/)** — 9170 Thornton Rd, Stockton, CA 95209 — (916) 932-3372 — 9 mi. Services: mobile testing, OBD testing, motorhome testing. - **[AJ's Towing](https://ctcfinder.com/tester/ajs-towing-galt/)** — 10375 Live Oak Ave, Galt, CA 95632 — (916) 222-9889 — 10 mi. Services: mobile testing, motorhome testing. - **[CARB Mobile Diesel Testing](https://ctcfinder.com/tester/carb-mobile-diesel-testing-galt/)** — 10430 Twin Cities Rd, Galt, CA 95632 — (916) 538-7777 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in Lodi San Joaquin County (Stockton, Tracy, Manteca, Lathrop) is a major Northern California distribution-center region, with the Port of Stockton on the San Joaquin River. ## Cost Typical published prices in California: OBD test $50–$135 per vehicle; smoke opacity test $190–$200. Prices are set by each tester. ## Frequently asked questions ### How many Clean Truck Check testers are in Lodi? CTC Finder lists 12 testing businesses in Lodi from CARB's public tester list (12 credentialed testers), last checked November 1, 2026. Listing on CARB's list is optional, so the real number can be higher. ### Is there mobile Clean Truck Check testing in Lodi? Yes. 11 listed businesses in Lodi offer mobile testing, which means the tester comes to your yard. Use the Mobile filter above to see them. ### How much does a Clean Truck Check test cost in Lodi? Testers set their own prices. Published prices for an OBD test are usually $50–$135 per vehicle; smoke opacity tests for older trucks often cost more, and mobile testers may add a trip fee. See the [cost guide](https://ctcfinder.com/guide/cost/). ### How often does my truck need a Clean Truck Check test? Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). ## Nearby cities - [Galt](https://ctcfinder.com/testers/sacramento-county/galt/) — 7 listings, 10 mi - [Stockton](https://ctcfinder.com/testers/san-joaquin-county/stockton/) — 50 listings, 12 mi - [French Camp](https://ctcfinder.com/testers/san-joaquin-county/french-camp/) — 3 listings, 18 mi - [Wilton](https://ctcfinder.com/testers/sacramento-county/wilton/) — 4 listings, 19 mi - [Valley Springs](https://ctcfinder.com/testers/calaveras-county/valley-springs/) — 3 listings, 20 mi - [Elk Grove](https://ctcfinder.com/testers/sacramento-county/elk-grove/) — 16 listings, 21 mi - [Lathrop](https://ctcfinder.com/testers/san-joaquin-county/lathrop/) — 5 listings, 22 mi - [Manteca](https://ctcfinder.com/testers/san-joaquin-county/manteca/) — 19 listings, 23 mi - [Escalon](https://ctcfinder.com/testers/san-joaquin-county/escalon/) — 10 listings, 24 mi - [Ripon](https://ctcfinder.com/testers/san-joaquin-county/ripon/) — 3 listings, 26 mi